Features1With 21 keys of rich range, the thumb piano has more playing space than 17 keys. 2Carefully polished beech wood material, the surface is smooth and round, which has good hand feels. 3With scale on it for more conveniently learning.SpecificationFeatures:With 21 keys of rich range, the thumb piano has more playing space than 17 keys.Carefully polished beech wood material, the surface is smooth and round, which has good hand feels.With scale on it for more conveniently learning.Compact size with storage bag for conveniently take away with you.Comes with a music book, easy to get started for kids and new beginners.It can produce a soothing and calming sound, you will enjoy to play with this little instrument.Exclusive design of deep sea blue whale.Specifications:Material: Beech+resin+metalItem Size: 175 * 140 * 20mm / 6.89 * 5.51 * 0.79inItem Weight: 500g / 17.64ozPackage Weight: 750g / 26.46ozPackage Size: 23 * 19 * 7.5cm / 9.06 * 7.48 * 2.95inPacking List:1 *1 * Tuning Hammer1 * Storage Bag1 * Wipe Cloth1 * Musical Note Sticker1 * Music BookPackage List1 *1 * Tuning Hammer1 * Storage Bag1 * Wipe Cloth1 * Musical Note Sticker1 * Music Book